JPS6341428Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a wire shifter device for a winch that guides a wire in order to prevent the winch winding the wire onto a drum from randomly winding the wire.

(Prior art) Wire or rope (hereinafter simply referred to as wire)
In a winch that winds the material onto a rotationally driven drum,
In order to reduce damage to the wire, it is necessary to wind the wire around the drum in an orderly manner to prevent the wire from winding randomly. For this reason, a wire shifter device that moves the winding position of the wire in synchronization with the rotation of the drum has been conventionally used.

FIG. 1 is a perspective view of this conventional device. In this figure, reference numeral 1 denotes a shifter, which includes a guide shaft 2, a bracket 4 held on a screw shaft 3, and two vertically long rollers 5 (5a, 5b). The screw shaft 3 rotates in synchronization with the drum 6, and due to this rotation, the bracket 4, which is provided on the screw shaft 3, is guided by the spiral screw groove 7 and moves. This screw groove 7 is a so-called diamond screw formed in two oppositely wound directions.
As the screw shaft 3 rotates in one direction, the bracket 4 automatically reciprocates. The wire 8 is wound onto the drum 6 while passing between these rollers 5a and 5b.

FIG. 2 shows its usage. In the conventional device 1, the diameter of the roller 5 is smaller than the warp of the wire 8, so if the fleet angle θ is increased, the wire will be in a state similar to a kink (twist).
The wire will be damaged and its lifespan will be significantly shortened.

For this reason, the distance L from the shifter 1 to the air leader 9 must be set considerably larger than the drum width B, which poses a problem in that the area occupied by the winch as a whole increases, making it difficult to install it in a narrow space.

In addition, when changing the direction of wire entry into the rollers 5 significantly, it is necessary to keep the fleet angle θ small by using one or more sheaves 10 as shown in Figs. 3 and 4, thereby reducing the occupied area. There was a problem that it was impossible to do so, and the search became complicated.

Therefore, it is possible to increase the diameter of the roller 5, but in this case, the shifter device becomes larger, and in the case of multi-layer winding, the bending force applied to the roller 5 increases at the final layer of the drum, which is disadvantageous in terms of mechanical strength. A problem arises.

(Objective of the Invention) The present invention has been developed in view of the above circumstances, and aims to eliminate restrictions on the direction of wire entry, reduce the occupied area, simplify cable routing, and downsize the device. It is an object of the present invention to provide a winch wire shifter device that can be advantageous in terms of strength.

(Structure of the Invention) According to the present invention, in a winch that winds a wire around a rotationally driven drum, a guide member arranged in parallel with the rotating shaft of the drum, and a slideable member held by the guide member are provided. and a guide sheave that is swingable around a hinge pin that is parallel to the guide member, and a feeding means that moves the guide sheave on the guide member in synchronization with the rotation of the drum, and the wire is moved to the guide member. This is achieved by a winch wire shifter device, which is characterized in that the wire is supplied from a direction substantially parallel to the wire and is wound around the drum in an orderly manner while being guided by a guide sheave. The present invention will be explained in detail below based on the illustrated embodiments.

(Example) Fig. 5 is a plan view of an embodiment of the present invention, Fig. 6 is a cross-sectional view taken along the - line, Fig. 7 is a plan view showing its use, and Fig. 8 is a perspective view of the vicinity of the sheave. be.

In FIG. 5, 20 is a drum, and its rotating shaft 22
The rotation of the electric motor 24 is transmitted to one end of the motor through a reduction gear 26 . Reference numerals 28 and 30 denote a round bar-shaped guide member and a screw shaft arranged in parallel with the rotating shaft 22. A bracket 32 is held on the guide member 28 and the screw shaft 30 so as to be slidable in the axial direction. A spiral guide groove 34 is formed in the screw shaft 30, and a piece 36 fitted into the bracket 32 is engaged with the guide groove 34. 38
is an intermediate shaft, and a sprocket 40 with a built-in clutch is attached to this shaft 38, and the rotation of the rotary shaft 22 of the drum 20 is transmitted to this sprocket 40 while being decelerated by a chain 42. intermediate shaft 38
The rotation is further transmitted to the screw shaft 30 by the chain 44 at a reduced speed. As a result, the screw shaft 30 rotates in synchronization with the drum 20. A handle 46 is attached to the intermediate shaft 38 for connecting and disconnecting the sprocket 40 and for manually rotating the screw shaft 30. As a result, the chains 42, 44, screw shaft 30, piece 36, etc. form a feeding means for moving the bracket 32.

A sheave bracket 50 is rotatably held on the bracket 32 by a single hinge pin 52 parallel to the screw shaft 30, and a guide sheave 54 is rotatably held on the sheave bracket 50. As a result, the guide sheave 54 can swing around the guide pin 52. The guide sheave 54 has a wrapping diameter that is 14 to 25 times the diameter of the wire 56.

In this embodiment, when the drum 20 is rotationally driven by the motor 24, the wire 56 is wound around the drum 20 or sent out while rotating the sheave 54. At this time, the screw shaft 30 also rotates, so the bracket 3 is rotated along the screw groove 34.
2. The sheave 54 also moves, and the wire 56 is wound or unwound around the drum 20 in an orderly manner.
For this reason, no turbulence occurs.

According to this embodiment, the wire 56 is connected to the guide member 30.
The sheave 54 is supplied from a direction substantially parallel to the wire, and even if the sheave 54 swings around the hinge pin 52 in response to changes in the wound layer on the drum 20, there is no risk of damaging the wire or the sheave 54. FIG. 7 shows an example of the usage state, and if the wire 56 is set substantially parallel to the drum 20 in this way, the area occupied by the device becomes very small.

FIG. 9 is a perspective view of the second embodiment, in which the guide member 28 and screw shaft 30 are installed on the ceiling, and the drum 20 is installed on the floor. 6 in the diagram
0 is a chain that transmits the rotation of the drum 20 to the screw shaft 30. According to this embodiment, the space above the drum is effectively utilized and the occupied area is further reduced.

FIG. 10 is a plan view of the third embodiment, in which two guide sheaves 54, 54 are disposed opposite each other, and the entry range A' of the wire 56 is enlarged.

(Effects of the Invention) As described above, in the present invention, the wire or rope is guided by being wrapped around the large-diameter guide sheave, so the range into which the wire or rope can enter can be expanded without increasing the size of the entire device. , will not promote damage to wires and ropes. In addition, the cabling becomes simple and the area occupied is reduced, making it easier to install in narrow spaces. Furthermore, since the guide sheave can swing freely around the hinge pin parallel to the guide direction of the guide member, it is possible to create a mechanically advantageous structure without applying excessive force to the sheave or bracket during multi-layer winding. become.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional device, Figs. 2 to 4 are diagrams of its use, Fig. 5 is a perspective view of an embodiment of the present invention, Fig. 6 is a cross-sectional view taken along the - line, and Fig. 7 is its use. FIG. 8 is a perspective view of the vicinity of the sheave, and FIGS. 9 and 10 are views showing other embodiments. 20...Drum, 22...Rotating shaft, 28...Guide member, 30...Screw shaft, 32, 32A
... Bracket, 52A ... Hinge pin, 54,
54A...Guide sheave, 56...Wire.

Claims (1)

[Claims for Utility Model Registration] (1) A winch for winding wire around a rotationally driven drum includes a guide member arranged in parallel with the rotating shaft of the drum, and a winch that is slidably held by the guide member and comprising a guide sheave swingable around a hinge pin parallel to the guide member, and a feeding means for moving the guide sheave on the guide member in synchronization with the rotation of the drum,
A wire shifter device for a winch, characterized in that the wire is supplied from a direction substantially parallel to the guide member and wound around the drum in an orderly manner while being guided by a guide sheave. (2) Set the guide sheave diameter to 14 to 25 of the wire diameter.
A wire shifter device for a winch as set forth in claim 1 of the doubled utility model registration claim.